The V10 goes beyond the vintage look with the latest features such as the lightweight fiberglass shell, aerodynamic performance, emergency tabs for added safety, detachable and washable interior and easy bolts for quick VISOR replacement. This helmet is compatible with Smart HJC's Bluetooth technology. Data sheet:Shell / Safety:Advanced fiberglass composite shell: lightweight, superior fit and comfort. - Cup size number: 3 (1st xs-s | 2nd ml | 3rd xl-2xl)Internal EPS dimension number3: 3 (1st xs-s | 2nd ml | 3rd xl-2xl)Approval: Meets and exceeds the legislation ECE 22.06 . Tests include energy attenuation, penetration resistance, structural integrity of the chin guard and labeling requirements for street motorcycle helmets - Strap: Double D ring - Visibility: ATTENTION: VISOR PROVIDED WITH TRANSPARENT EQUIPMENTHJ-41 Transparent visor with 99% UV protection, prepared for pinlock - Pinlock DKS476 lens Included